How to Access and Use Gemini 4 Argon Today

Gemini 4 Argon arrived for Google AI Pro and Ultra subscribers on October 13, 2026. The model handles long, multi-step tasks in coding, research, and professional work better than previous Gemini versions.

You need a paid plan to use it in the Gemini app. Developers can call it through the Gemini API on the paid tier. This guide shows the exact steps to switch to Argon and get useful results.

Check Your Plan and Update the App

Google AI Pro costs $19.99 per month in the US. Ultra starts at $99.99. Free and Google AI Plus users do not see Argon in the model picker yet.

Open the Gemini app on your phone or computer. Go to Settings and confirm your subscription shows Pro or Ultra. Update the app from the Play Store or App Store if the model option is missing. Rollouts reach accounts gradually, so wait a few hours if Argon does not appear immediately.

On Android, the power button assistant uses the same account. Make sure you are signed in with the Google account that has the paid plan.

Select Gemini 4 Argon in the Gemini App

1. Open the Gemini app.
2. Tap the model name next to the prompt box. It often shows Auto or a Flash model by default.
3. Choose Gemini 4 Argon from the list. The option appears under complex tasks.
4. Start a new chat. Older conversations stay on their original model.

The app also offers a toggle between Chat and Tasks in the main window. Tasks mode lets Argon continue work across Google apps while you step away. This feature requires Keep Activity on and Personal Intelligence opted in.

Use Argon for Practical Tasks

Argon keeps context across long conversations and produces more direct answers. It shares progress updates during extended work instead of going silent.

Try these prompts after selecting the model:

• Summarize a 50-page PDF you upload and list three action items.
• Refactor a function and explain the changes in plain language.
• Research a topic and output a structured outline with sources.

For coding on macOS, the Gemini desktop app now includes Antigravity’s agent interface. You can move from chat to coding tasks without leaving the app. Ultra subscribers get full Antigravity access on desktop and the command line.

In AI Mode inside Google Search, Pro and Ultra users can also select Argon for deeper answers.

Access Argon Through AI Studio and the API

Developers use the model ID gemini-4-argon in Google AI Studio or the Gemini API. You need a paid API tier. Ultra subscribers can try it inside AI Studio and Antigravity without separate API billing for testing.

1. Sign in to AI Studio.
2. Create a new prompt or chat.
3. Select Gemini 4 Argon from the model dropdown.
4. Set thinking level to medium or high for complex work. Low works for faster replies.

The model supports a unified 1 million token context window for input and output. Cached input tokens cost 95 percent less during the introductory period.

Introductory API pricing through November 30, 2026 is $2 per million input tokens and $10 per million output tokens. After that the rates double to $4 and $20.

Tips for Better Results

Break large requests into clear steps when the task spans many files or documents. Argon handles long outputs, but structured instructions reduce rework.

Ask it to show its reasoning only when you need verification. The model already reduces hedging and filler compared with earlier versions.

Monitor usage in the Gemini app or Google AI Studio dashboard. Higher thinking levels and long outputs consume more of your plan quota.

If you previously used Gemini 3.8 Flash for similar work, compare the same prompt on both models. Argon usually finishes multi-step coding and research tasks with fewer corrections. See our earlier guide on Gemini 3.8 Flash API setup for baseline prompts.

Watch the Official Overview

Google for Developers published a 30-minute conversation with the team behind Argon. They cover the 1 million output token limit, internal testing, and practical use cases.

Conclusion

Gemini 4 Argon is available now for Google AI Pro and Ultra subscribers in the Gemini app and AI Mode. Developers reach it through the paid Gemini API in AI Studio. Select the model in the picker, start a fresh chat, and test it on a real multi-step task.

The introductory API pricing ends November 30. Check your plan status and update the app if the option has not appeared yet. Official details live on the Google blog and AI Studio developer guide.

Sources

• Google, Gemini 4 Argon is now available for everyone, October 13, 2026.
• Google, Gemini 4 Argon comes to the Gemini app, October 13, 2026.
• Google AI Studio, Gemini 4 Argon: Developer Guide.